Sale

Exhaust Mufflers and Resonators

Flowmonster

FLOWMONSTER 409SS, MUFFLER 22X11X5X28

$114.95 $91.75 Save $23.20

SKU: F00V 12599-FM

Out of Stock
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Overview

The Flowmaster FLOWMONSTER 409SS is an absorption muffler designed for cars and trucks with 4 or 6-cylinder engines. It features a 22-inch case with dual 3-inch inlets and dual 3-inch outlets.
The muffler is constructed from 409 stainless steel with a 16-gauge aluminized steel interior and is 100% MIG welded for durability. Its oval case design is reversible, and it produces a moderate sound level.
Show original supplier description
FLOWMONSTER 409SS, MUFFLER 22X11X5X28

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandFlowmonster
Part NumberF00V 12599-FM

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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